Yuan Xue-Ling, Cao Jian-Jin, Xie Fang-Yan, Yang Xiao-Jie, Yan Hong-Bin, Lai Pei-Xin, Wang Zheng-Hai, Zeng Jian-Nian
Department of Earth Sciences, Sun Yat-sen University, Guangzhou 510275, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2013 Jan;33(1):228-32.
In the present paper, characteristics of material compositions, phase structures, surface element states, and transformation mechanism of oxidized particles from Dongshengmiao pyrite-polymetallic sulfide deposit were studied using modern analytical testing technology including XRD, FTIR and XPS. The results show that the samples consist of gypsum, calcite, quartz, muscovite, goethite, organic matter, etc. Primary ore in deep oxidation zone mainly under went such processes as oxidization, hydrolysis, dehydration and carbonation. Compared to the surface oxidation zone of arid and extremely arid regions in the northwestern China, the oxidation process and oxidizing condition of the deep oxidation zone were less complex. New mineral type was also not found, and extensively developed sulfate minerals were rare to be seen. The research results can not only be applied to mineral identification of oxidized particles from this type of ore deposit but also play an important role in ore exploration, mining, mineral processing, etc.
本文利用XRD、FTIR和XPS等现代分析测试技术，对东升庙硫铁矿-多金属硫化物矿床氧化颗粒的物质组成、相结构、表面元素状态及转化机理进行了研究。结果表明，样品由石膏、方解石、石英、白云母、针铁矿、有机质等组成。深部氧化带原生矿石主要经历了氧化、水解、脱水和碳酸化等过程。与中国西北干旱和极干旱地区的地表氧化带相比，深部氧化带的氧化过程和氧化条件较简单。未发现新的矿物类型，广泛发育的硫酸盐矿物也少见。研究结果不仅可应用于该类型矿床氧化颗粒的矿物鉴定，而且在找矿、采矿、选矿等方面具有重要作用。
